Late Quaternary hydroclimate and vegetation changes in an upland lake in southeastern Amazonia.

An integrated approach considering facies, isotopic, and palynological analyses of lake sediments from the Serra Norte de Carajás, southeastern Amazonia, is presented in this work to refine paleoclimate and paleohydrological changes based on upland lake sediments during the late Quaternary. The sediments have a fining-upward deposition cycle typical of upland swamps/lakes. The origin of organic matter is autochthonous mainly related to C3 terrestrial plants, macrophytes and algae.

Electrical resistivity of the Fe-Si-S ternary system: implications for timing of thermal convection shutdown in the lunar core.

The composition of the lunar core has been suggested to be Fe-rich with varying amounts of lighter elements, such as Si and S. Presence of Si and S affects electrical and thermal transport properties and thus influences core thermal processes and evolution. Paleomagnetic observations constrain a high intensity magnetic field that ceases shortly after formation of the moon (~ 3.

Resistivity of solid and liquid Fe-Ni-Si with applications to the cores of Earth, Mercury and Venus.

Electrical resistivity measurements of Fe-10wt%Ni-10wt%Si have been performed in a multi-anvil press from 3 to 20 GPa up to 2200 K. The temperature and pressure dependences of electrical resistivity are analyzed in term of changes in the electron mean free path. Similarities in the thermal properties of Fe-Si and Fe-Ni-Si alloys suggest the effect of Ni is negligible.

Is breast ultrasound a good alternative to magnetic resonance imaging for evaluating implant integrity?

Objective: To compare the diagnostic performance of breast ultrasound and breast magnetic resonance imaging and to correlate the findings on the two techniques that are suggestive of implant rupture.

Material And Methods: We reviewed the images and reports of breast ultrasound and magnetic resonance imaging studies done in our diagnostic and interventional breast imaging unit to evaluate breast implants in 205 patients between January 2015 and December 2017.

Results: Ultrasound findings were compatible with implant rupture in 87 (42.

Is breast ultrasound a good alternative to magnetic resonance imaging for evaluating implant integrity?

Objective: To compare the diagnostic performance of breast ultrasound and breast magnetic resonance imaging and to correlate the findings on the two techniques that are suggestive of implant rupture.

Material And Methods: We reviewed the images and reports of breast ultrasound and magnetic resonance imaging studies done in our diagnostic and interventional breast imaging unit to evaluate breast implants in 205 patients between January 2015 and December 2017.

Results: Ultrasound findings were compatible with implant rupture in 87 (42.